​​​​​​Currently, Metro Vancouver’s source reservoirs can be maintained nearly full under normal conditions from October to March. Snowpack typically starts melting around April, and the reservoirs are drawn down until early fall when the rain returns.

​​​​​​Metro Vancouver posts weekly reservoir storage levels from
May to October, when rainfall is lower and the regional demand for water can increase by 50%.

Note that data from 2015 is included, to show impact of extreme dry weather conditions on total source storage.